Most of what I build works with the network off. No accounts, no telemetry, no paywall. Things that keep working on a train, in a basement, or on a phone with no signal are simply better tools, and building that way forces every decision to be honest about what it actually needs.
YatoStream · Go A local anime and manga server: library scanning that tolerates messy folder naming, torrent search and direct streaming, AniList sync, manga reading, apps for desktop and mobile. Runs on your own machine, nothing routed through anyone else's.
Vitals Local · JavaScript, no dependencies Health reference and symptom triage in the browser. An adaptive question flow picks whichever question is expected to narrow the causes most, over published decision rules such as Wells, Alvarado, Ottawa and SNNOOP10. Red flags are hard rules no score can override. 65 languages, translated on the device. No build step and nothing to install. Try it
Witch Atelier · JavaScript, no dependencies A spell circle drawing tool in the style of Witch Hat Atelier. A freehand stroke is read by its own shape, not matched against one fixed template per sign, and recognized compositions are checked against a full spellbook. Static site, nothing to install. Try it
Pekko Fridge · JavaScript A private expiry tracker for food, medicine and cosmetics. Tells you what to use first and what is about to go. Cute on purpose.
Hallal Scanner · React Native Points a camera at an ingredient label and reads it offline. No lookup service, so no record of what anyone scanned.
Floorsense · TypeScript WiFi presence analytics for venues, built around consent rather than around collecting whatever the hardware can see.
Macro Tool · Python Macro recording and playback for Linux under X11.
TLP Battery Tuner · Shell One command to get sane battery settings on any Linux distribution.
Cold Boot · Python Turns a chosen news feed into a narrated, captioned YouTube video overnight, using a local LLM for the script, Kokoro for narration and Whisper for captions. Nothing runs in the cloud and nothing charges monthly. The README is upfront about how long a channel actually takes to earn anything.
Karaoke Queue · JavaScript A local network song request queue built to replace paid per song karaoke systems. Guests queue songs from a tablet, a second screen drives the venue's speakers, and the whole thing runs off one machine with no signup.
YatoGaku · TypeScript A Japanese learning site built by combining existing open source tools instead of rebuilding a kana trainer or a spaced repetition engine from scratch. Work in progress. Try it
Not everything is offline. These talk to a network because the job needs one.
Schedule.az · TypeScript, Next.js, Postgres A multi-tenant booking platform and directory for local service businesses: barbershops, salons, spas, tutoring centers, gyms. Phone-OTP accounts, staff calendars with time-off exceptions, SMS-confirmed bookings, and analytics computed from what was actually charged, not what was listed.
Full Hearts · TypeScript, Next.js
A Minecraft modpack builder. Pick mods and it resolves every dependency,
version-matches them to your loader, and checks they run together against
live Modrinth and CurseForge data before exporting one .mrpack.
Try it
resto-bot · Python Terminal proof of concept for a WhatsApp restaurant booking assistant. Figures out which location a guest means, books a table against real availability, extends existing reservations, and forwards anything a manager should handle.